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| GEOLOGICAL SURVEY Number 67 The El Oro metamorphic complex, Ecuador: geology and economic mineral deposits...Bonilla, W, and Duque, P. 1995. The El Oro metamorphic complex, Ecuador: geology and economic mineral deposits...Energia y Minas Quito Ecuador P Duque Escuela Politenica Nacional Casilla 2759 Quito Ecuador Contributors NJ...Cover photograph Stunted cloud forest, southern Ecuador ( C Mort.imer, BGS) iii CONTENTS Abstract 1...General setting 5 Geology of Sub-province I 6 Tahuin semi-pelitic division 6 El Tigre unit 6 La Victoria unit |
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| 11 The metamorphic belts of Ecuador The metamorphic belts of Ecuador CQVer photograph Cerro Hermoso... OVERSEAS MEMOIR 11 The metamorphic belts of Ecuador M Litherland,] A Aspden and RAJemielita Keyworth...andjf.MIEl,ITA, RA. )994. The metamorphic belts of Ecuador. Overseas Memofr of the British Geologi-cal Survey...7 Andean metallogenesis 9 Metamorphic rocks of Ecuador l0 Stratigraphical nomenclature 10 Metamorphic...and skarns 33 Alao terrane 36 Alao-Paute unit 36 El Pan unit 38 Maguazo unit 39 Guamote terrane • 41 |
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| 26 15. Geologic map of the Pumpkinvine Creek and Canton Formations . . . . . . . . . . . . . . . . . ..... . . . . . . . . . . . . . 34 20. Map showing Canton Formation type locality .........................Kingston Cartersvil le AIIatoona Dam South Canton Canton Birmingham Cumming Bu ford Dam Fiowery Branch...quadrangles. Ridge The Blue Ridge geologic province as defined in this report bears little resemblance...Atlanta Region we define the Blue Ridge geologic province as covering the area between the Cartersville |
 | Higgins, M.W., Atkins, R.L., Crawford, T.J., Crawford, R.F., Brooks, Rebekah, Cook, R.B. (1988) The structure, stratigraphy, tectonostratigraphy, and evolution of the southernmost part of the Appalachian Orogen. Professional Paper 1475. US Geological Survey doi:10.3133/pp1475 | Report (issue) |
| Mountain and Salem Church Gneisses (abandoned), Cohutta Schist (abandoned)..................................Dog River Formation (abandoned) .................. Andy Mountain Formation (abandoned) ............. Tallulah...Amphibolite or Formation (abandoned) ... Pumpkinvine Creek Formation (abandoned) ......... Ropes Creek thrust...(revised) .................. Mud Creek Formation (abandoned) ................. Cedar Lake Member (revised)...Rock Gneiss (abandoned)..................................... Univeter Formation (abandoned) .......... |
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| Wiener North Carolina Geological Survey graphic province, a major geographic entity that extends for nearly...southern Pennsylvania into Georgia. The width of the province in this vicinity is about 75 miles. The northwestern...a southern section. Hack’s Southern Blue Ridge Province extends from the Roanoke River in Virginia south-westward...He further subdivides the Southern Blue Ridge Province into topographic subunits. Several subdivisions...Highlands, the Asheville Basin, and the Waynesville- Canton Basin. Lower, much more subdued landscapes characterize |
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| includes geologic age, geographic location, geologic province, type locality, subunits, and a summary of the...the type locality is listed first. • Geologic province of type area as established by the American Association...Cretaceous (Comanchean) Florida South Florida province Applegate, A.V., Winston, G.O., and Palacas, J...Proterozoic or Cambrian Virginia Piedmont-Blue Ridge province Drake, A.A., Jr., and Lyttle, P.T., 1981, The...deformed pelitic quartz-muscovite-biotite-chlorite-plagioclase schist containing thin basal intervals of fine-grained |
 | Markowski, Agnès, Vallance, Jean, Chiaradia, Massimo, Fontboté, Lluìs (2006) Mineral zoning and gold occurrence in the Fortuna skarn mine, Nambija district, Ecuador. Mineralium Deposita, 41 (4) 301-321 doi:10.1007/s00126-006-0062-x | Journal (article/letter/editorial) |
| occurrence in the Fortuna skarn mine, Nambija district, Ecuador Received: 24 February 2005 / Accepted: 25 March...northern part of the Nambija gold district, southern Ecuador. It has been subdivided into four mineralized sites...type alteration with development of Na-rich plagioclase, K-feldspar, epidote, actinolite, anhedral pyroxene...gold districts in Ecuador, is located in the southern part of the country (Zamora province) in the Cordillera...(Prodeminca 2000), but they were subsequently abandoned. The rediscovery of the mineralization in the |
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| Chile chemistry Colombia crystallography Cuba Ecuador French Guyana Honduras hydrology Latin America...Central Chile quimica Colombia cristalografia Cuba Ecuador frances Guyana Honduras hidrologia Latinoamerica...(Costa Rica) cabelleria (Cuba) cabelleria (Ecuador) cabelleria (El Salvador) cabelleria (Guatemala) cabelleria...(Nicaragua) cabelleria (Santo Domingo) cantero (Ecuador) carga (Venezuela) caro (Santo Domingo) corral...manzana (Argentina) manzana (Costa Rica) manzana (El Salvador) manzana (Guatemala) manzana (Honduras) |
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| Formation, metasedimentsand metavolcanicsof the Canton Formation, metavolcanicsof the Mud Creek Formation...years,Georgiawasoneof the leadinggold- least217 abandoned minesandprospects. Although producingstates.However...undifferentiated • Formation .• __undifferentiated Helen Canton Member Metatrondhjemite Formation ,•.•.• undifferentiated...tu H gfg --New GeorgiaGroup undifferentiated Canton Formations Plunging overturned •) 34 ø Overturned...Creek Formation,the PumpkinvineCreek Formation, the Canton Formation, the Kellogg Creek maficcomplex,and the |
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| (thin-spot?). We propose that subduction was abandoned, subsequent to the accretion of allochthonous...All rights reserved. Keywords: Northern Andes; Ecuador; Oriente Basin; alkaline magmatism; Cretaceous;... OXY Ecuador, Ave. Naciones Unidas E7-95 y Shyris, Edificio Banco del Pacı́fico, Quito-Ecuador. Tel.:...intra-plate alkaline magmatism from the Oriente Basin of Ecuador associated with the evolution of the northwestern...BASIN Quito ECUADOR ORIENTE BASIN GUAYANA SHIELD PUTUMAYO BASIN ORIENTE BASIN (ECUADOR) CUTUCU UPLIFT |
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| DAMTOFT, Second Vice Chairman WALTER CHARLES Canton S. ALLEN Durham W. B. AUSTIN Jefferson North...Sutton quarry . Other quarries The Crabtree quarry : Rolesville granite area Dimension stone quarry Lassiter...Lassiter quarry Wendell granite area '. Knightdale granite area Abandoned quarry Other granite and granite-gneiss...CONTENTS—CONTINUED Vance County Greystone quarry Middleburg quarry : Other granite areas in Vance County...stone quarry Basic dikes Warren County Warrenton area Warren Plains area Warren County State quarry Old |
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| NEW ZEALAND GROUNDWORK On the Mineral Trail: ~ Ecuador Cl :::;; Subscriptions Telephone (03) 98051605...thin crosssection, showing zones of orthoclase, plagioclase, quartz and colourful mica. Above right: This...potassium-bearing orthoclase and calcium-bearing plagioclase (a group name for minerals of the albite-anorthite...feldspar minerals microcline, orthoclase and plagioclase. Most of the dark grey crystals in adameUite...rock Essential components: Biotite, orthoclase, plagioclase and quartz Secondary components: Hornblende Colour: |
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| 0 0 0 0 0 0 Pumpkinvine Creek Formation Canton Formation 0 0 0 0 0 0 0 0 0 0 0 0 ...o Burnt Hickory Ridge District 0 0 0 South Canton District 0 0 o Introduction 0 0 0 Gold... Modal analysis of selected rocks of the South Canton district . . . . . . . . . . . . . . . . . . ....gold belt. cover pocket 2. Geology of the South Canton district. 3. Geology of the Burnt Hickory Ridge...the Dahlonega gold belt. These belts extend from Canton in Cherokee County southwestward to the Georgia-Alabama |
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| without notice $9.00 PlateI Mont St-Hillaire quarry. (GSC 138741) CONTENTS ix | Abstract l Introduction...Lake occurrences 6 Kingston township quarry 6 McFarland quarry 7 8 3 Road-cuts, km 8.2 to 8.4, Highway...Highway Road-cuts, km 9.3, Highway 38 Limestone quarry, west of Highway Freebern mica mine 8 y Mobey... Enterprise mine 10 38 38 Sand Road (Card) quarry 10 Dwyer 1] 1] Godfrey-Westport occurrences...blue calcite occurrence Long Lake zinc mine Gabbro quarry Road-cut on Highway 38 at km 57.6 17 brucite |
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| original plan to publish this manuscript in 1940 was abandoned due to lack of funds. The absence of the author...fine-grained schists of the Wedowee, Ashland, and Canton formations. GEOLOGY AND MINERAL RESOURCES 6...quartzose varieties to highly micaceous types. Plagioclase (oligoclase to andesine) is generally present...schisto sity of th e gneiss is essenti a ll y pa r all el t o th e b e d d in g of th e quar t zit e, this...River, Ra~un County. to consist of quartz , plagioclase, (oligoclase to andesine) , biotite, orthoclase |
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| Active quarry Abandoned quarry Abandoned quarry Cliffs near a spring Abandoned quarry Active quarry, level...level 1 Active quarry, level 7 Boulder field Free boulders Road cut Abandoned quarry Large boulders Cliffs...Cliffs Small abandoned quarry Active quarry Rocks Trachyandesite Trachyandesite Trachyandesite Rhyolite...alovec Vysok!a, el. 751 N of JanoviWky E of Ruprechtice HynWice Homole, el. 485 Bob$r!ı vrch, el. 740 SSW of...R—rhyolite; Q—quartz, Afsp—alkali feldspar, Plg—plagioclase, Bi—biotite, Amph—amphibole, Cpx—clinopyroxene |
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| ....•..••....•.••.......•................... 4 Canton Formation· .......•...•...........•.............. 6 7. Photomicrograph of polycrystalline plagioclase porphyroblast (Barlow Gneiss Member) embedded...16. Photomicrograph of garnets in schist of the Canton Formation .......................................Photomicrograph of chlorite after biotite in schist from the Canton .Formation .......................... . 16 18.............. . 18 19. Relationship between abandoned gold mines and lithology- Auraria/Dahlonega area |
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| ...... 138 El Cairo quarry....................................... 140 Neira quarry.................statement................................... 149 El Silencio mine..................................*...; Dr. Ricardo Vasquez ' t*i ' and Gia de Cementos El Gairo, S, A.; Dr. Alvaro Londono and Gia. de Cementos...Mineral Range (percent) Quartz 30 to 60 Plagioclase (An«Q to An fl Biotite 8 to 40 Muscovite or...augen, 1 to 4 cm long, of coarsely granular plagioclase and quartz megacrysts separated by gnarly laminae |
 | Vallance, Jean, Fontboté, Lluís, Chiaradia, Massimo, Markowski, Agnès, Schmidt, Susanne, Vennemann, Torsten (2009) Magmatic-dominated fluid evolution in the Jurassic Nambija gold skarn deposits (southeastern Ecuador) Mineralium Deposita, 44 (4) 389-413 doi:10.1007/s00126-009-0238-2 | Journal (article/letter/editorial) |
| Jurassic Nambija gold skarn deposits (southeastern Ecuador) Jean Vallance & Lluís Fontboté & Massimo Chiaradia...Piuntza unit in the sub-Andean zone of southeastern Ecuador. The skarns consist dominantly of granditic garnet...fluids . Oxygen isotope . Chlorite . Nambija . Ecuador Introduction Skarns are an important source of...district is one of the main gold producers of Ecuador (see Chiaradia et al. 2009) and is economically...located in the sub-Andean zone of southeastern Ecuador, 40 km west of the Peruvian border (Fig. 1). The |
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| : Graniteville Granite at the Missouri 3 Red Quarry Location Outcrop Description Stop Royal Gorge...Bloomington Area Surficial Geology Stop 2: Kane Quarry Overview : Site Details Stop 3: Mason Hollow...Core ELS-1 Note on the Great Flood Stop 5: Lohr Quarry Overview of 1993 Site Details Groundwater Issues...5-minute Quadrangle 2-5 Location of Stop 2 (Kane Quarry) in a portion of the Boyer Creek 7.5-minute Quadrangle...summarizing findings at Kane Quarry 2-7 Magnetic susceptibility of Kane Quarry Section 2-8 Location of Stop |
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| Ground-Water Resources of the Pica Area Tarapaca Province, Chile By ROBERT J. DINGMAN and CARLOS GALLI...and sections of the Pica quadrangle, Tarapaca Province, Chile. 2. Map of Pica, Chile, showing location...dinosaur tracks, Quebrada Chacarilla, Tarapaca Province: 7. Dinosaur trackways in Chacarilla Formation_____...GROUND-WATER RESOURCES OF THE PICA AREA, TARAPACA PROVINCE, CHILE By RoBERT J. DINGMAN and CARLos GALLI...Geol6gicas de Chile. 1 2 PICA AREA, TARAPACA PROVINCE, CHILE composed of rhyolitic welded tuffs. The |
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| manganese deposits of GuisaLos Negros area, Oriente Province, Cuba, by W. P. Woodring and S. N. Daviess (published...27. 28. 29. 30. 31. 32. 33. Principal workings at El Cid mine, Camaguey.... 42 Plan and section of the...Holguin, Oriente Province................ 58 Map of the eastern part of Oriente Province^, showing location....... 78 A, Manganese oxide pocket in limestone, El Tony prospect, Oriente, Cuba............. 86 B, Manganese...San Luis Potosi................... 110 A, Small abandoned tin mine near San Pelipe, Guanajuato; B, Small |
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| Frontino Gold Mines Ltd........................ 186 El Limon mine .................................. 189............................................. 211 El Jordan.................................................................. 217 Placer andalusite at El Bagre.................... 217 Exploitability.....complex orogen of great length. Near the Colombia-Ecuador border, approximately at the equator, the mountain... 1959 - 1966 X Puerto Merrio 19^2 - 1967 50 El Bagre Guatape Years of records 3950 - 1Q60 123 |
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| .....................5 Mount Clarence historic quarry .....................................................................5 Albany Monumental Masons quarry .....................................................................................13 Phill’s quarry ....................................................................................17 American quarry ....................................................................................17 Fantasia quarry .............................................. |
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| period 1912-1932. Small amounts of moonstone (plagioclase) and spessartine have also been used for gems...Dolomite at the James River Hydrate and Supply Company Quarry, near Buchanan; magnification approximately 2.5x;...v. 41, pp. 616-626. III. Lone Jack Quarry The Lone Jack Quarry near Glasgow, Rockbridge County, first... Noteworthy Deposits 29 worthy palygorskite. The quarry has subsequently become recog nized as an outstanding...parallclopipcd-shapcd crystal in a vug from the Lone Jack Quarry near Glasgow; photograph by G. K. McCauley. 30 |
